Improvement in burglar-proof safes



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My invention has for its object to improve the construction of burglar-proof safes in such a way that it diritti tsie @met dimite.

WILLIAM MCFRLAND, 0F WILLIAMSBURG, NEW YORK.

Leners Patent No. 100,731, dazed Mmhi, 1870.

awww- IM-PRO'VEMENfI IN B 'URGLAR-PROOF SAPI-JS.

The sehedule referred. to in' these Letters Patent and making part `of the same.

. tween the door and body of the safe.

` Figuret! is 'a detaiLsectional view ofthe safe-door taken through the line ze, fig. 1, looking in the direction of the arrow, and parts being broken away to show the construction.

Similar letters of reference ,indicate correspondingI will be impossibletoblow'powder through the joint between the door and body of the safe to blow the door open; and

It consists in an open spring ring inserted in a flange or shoulder of the door and body, either orboth within the steel and iron-ribbed plates in such a way as to bear against a flange or shoulder of the other part, as

hereinafter more-fully described.

- A represents the body of the safe, of which a.1 is the outer heavy' iron band, and az i's the ribbed plate of .iron-and steel.

'B is the door of the safe, of which b is the nuten heavy iron plate, and Wis the ribbed iron and steell plate. The jointbetwcen the door B and body .Aoi the safe is formed of aseries of' inclined anges or shoulders, as show n in tig. 1.

b3 is a plate of the'door within the iron'and steelor channeled, as shown in iigs. l and 2. In this grooveor channel is placed the bars C that form the open or powder-ring.

The parts of the'op'enrng O are securedv in place by screws D which pass through holes in the said bars'V and screw into the solid body of the plate b3.

The h olesin the barsC through which the screws D pass, are deeply countersunk at their outer ends, so that the said bars may be pushed inward without causing the heads of the screws D to project beyond the outer surface of the said bars.

EV are coiled or equivalent springs placed between `the bars C andthe body of 'the plateb3 to hold the bars C thatform the powder-ring pressed outward.1

' The short curved bar that passes around the rounded corners of the safe, is made in three partshinged to each other, as shown in iigr2.`- The ends of the hinged par'tsof 'the curved corner bar, and the adjacent ends of the straight bars, are beveled with a curved or straight bevel, so that the said ends may overlap and slide nponeach other as the open ring .moves in and out, ner barsto the plate b2 enters the said plate diagonally, as shown in fig. 2.

The necessity ot' making the curved corner-bars jointed arises from thefact, that, as the door swings shut, the top and bottom bars (l of the powder-ring f begin to be pressed in at their ends next the hinged edge of the door, so that the ends of the corner or 'curved barsv are pressed -in lbefore the middle parts of said. curved bars are acted upon. The hinged ends ofthe curved corner-bars are held out against the overlapping adjacent ends of the straight bars by a spring, F, connected with the inner side of the said corner-bars, as sh..wn iu g. 2. The outer side or face of the open ring G is beveled or rounded o, as shownin iig. l. By this construction, when the door is swung shutthe beveled facev of the bars C strikes against the ange' or shoulder of the' body of the safe, and the said ring is forced inward.

The rounded or beveled faces of the hars O, and the action of thespringsF acting together, roll the said bars slightly,- so as to force their outer edges against the inner side of the .steel plate b at the same time ,that their faces are pressed against the anges of the body of the safe, thusclosing the joint so closely that it will'be impossible to blow powder in through the said'joiut.

The open spring-ring() may be placed inthe door or in the body of the safe, or in both, but in all cases the ring or rings must be 'placed within the steel and iron-ribbed plates, so that it will be impossible for the saidring or ring-chamber to be reached by drilling.

- Having thus described' my invention, ribbed plate b2. .'lhe edge' of the plate if' is grooved I claim as new, and desire to secure by"Lette's Patent- 1. The open spring-ring C inserted in a groove or channel inthe door or body, either or both, ofthe4 safe, andl pressing against the ot er of said parts, substantially as herein shown and described and for the purpose set forth.

- 2. The hinged curved corner-bars or pieces C, con-- Witnesses:

E. flATn, 'Jantes '.l. GRAHAM.

The screw D that secures the curved cor- 

